There are several methods for heat transfer enhancement. For example, there are attaching various fins on the heat transfer surface, processing the surface roughly, inserting twisted tape, and so on. These methods increase heat transfer coefficient or area by manufacturing of the heat transfer surface. However, it has to take into consideration the deterioration of the structure strength by attaching the fins on the tube surface with the design of the heat exchanger. The objective of this study is to clarify characteristics of heat transfer and pressure drop in the channel inserted metallic wire with high porosity. A heat transfer experiment has been performed using a horizontal circular tube to obtain the heat transfer characteristics in the channel inserted copper wire. This paper describes the heat transfer and flow characteristics of a heat exchanger tube filled with a high porous material. Fine copper wire (diameter: 0.5 mm) was inserted in a circular tube dominated by thermal conduction and forced convection. Working fluid was air. Hydraulic equivalent diameter was cited as the characteristic length in Nusselt number and Reynolds number. From the results obtained in this experiment, it was found that an amount of heat transfer in the tube with the copper wire was larger than that without one. An effectiveness of heat transfer enhancement increased with the temperature of the heated wall. The amount of heat transfer in the circular tube inserted copper wire, which has 0.993–0.998 of porosity, increased about 15% comparing with the tube having a smooth wall surface under the condition of the constant heat flux and lower than 170°C of the wall temperature.
Skip Nav Destination
18th International Conference on Nuclear Engineering
May 17–21, 2010
Xi’an, China
Conference Sponsors:
- Nuclear Engineering Division
ISBN:
978-0-7918-4930-9
PROCEEDINGS PAPER
Heat Transfer Characteristics of a Circular Channel Inserted Metallic Wire With High Porosity Available to Purchase
Mitsutoshi Tendo,
Mitsutoshi Tendo
University of Yamanashi, Kofu, Yamanashi, Japan
Search for other works by this author on:
Tetsuaki Takeda
Tetsuaki Takeda
University of Yamanashi, Kofu, Yamanashi, Japan
Search for other works by this author on:
Mitsutoshi Tendo
University of Yamanashi, Kofu, Yamanashi, Japan
Tetsuaki Takeda
University of Yamanashi, Kofu, Yamanashi, Japan
Paper No:
ICONE18-29421, pp. 537-542; 6 pages
Published Online:
April 8, 2011
Citation
Tendo, M, & Takeda, T. "Heat Transfer Characteristics of a Circular Channel Inserted Metallic Wire With High Porosity." Proceedings of the 18th International Conference on Nuclear Engineering. 18th International Conference on Nuclear Engineering: Volume 2. Xi’an, China. May 17–21, 2010. pp. 537-542. ASME. https://doi.org/10.1115/ICONE18-29421
Download citation file:
9
Views
Related Articles
Effects of a High Porous Material on Heat Transfer and Flow in a Circular Tube
J. Heat Transfer (February,2009)
Forced Convection Heat Transfer in Spray Formed Copper and Nickel Foam Heat Exchanger Tubes
J. Heat Transfer (June,2012)
Forced Convection in High Porosity Metal Foams
J. Heat Transfer (August,2000)
Related Chapters
Completing the Picture
Air Engines: The History, Science, and Reality of the Perfect Engine
Heat Transfer and Pressure Drop Correlations for Compact Heat Exchangers with Multi-Region Louver Fins
Inaugural US-EU-China Thermophysics Conference-Renewable Energy 2009 (UECTC 2009 Proceedings)
Hydraulic Resistance
Heat Transfer & Hydraulic Resistance at Supercritical Pressures in Power Engineering Applications